/*
 * This file is part of jboss-admin-rest
 * Copyright 2009, Christos Vasilakis (cvasilak@gmail.com)
 * 
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.admin.rest.factory;

import org.jboss.admin.rest.exceptions.InternalServerErrorException;
import org.jboss.deployers.spi.management.ManagementView;
import org.jboss.deployers.spi.management.deploy.DeploymentManager;
import org.jboss.profileservice.spi.ProfileKey;
import org.jboss.profileservice.spi.ProfileService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.naming.InitialContext;
import javax.naming.NamingException;

public class ProfileServiceFactory {

	private static ProfileService profileService;
	private static ManagementView managementView;
	private static DeploymentManager deploymentManager;

	private static final String     PROFILE_SERVICE_JNDI_NAME = "ProfileService";
	public  static final ProfileKey DEFAULT_PROFILE_KEY = new ProfileKey(ProfileKey.DEFAULT);

	private static final Logger logger = LoggerFactory.getLogger(ProfileServiceFactory.class);

	private ProfileServiceFactory() {
	}

	public static ProfileService getProfileService() throws InternalServerErrorException {
		if (profileService == null) {
			InitialContext initialContext;
			try {
				initialContext = new InitialContext();
			} catch (NamingException e) {
				throw new InternalServerErrorException("failed to create JNDI InitialContext!");
			}
			
			try {
				profileService = (ProfileService) initialContext.lookup(PROFILE_SERVICE_JNDI_NAME);
			} catch (NamingException e) {
				throw new InternalServerErrorException("failed to lookup JNDI name '" + PROFILE_SERVICE_JNDI_NAME + "' from InitialContext!");
			}
		}
		return profileService;
	}

	public static ManagementView getCurrentManagementView() throws InternalServerErrorException {
		if (managementView == null) {
			managementView = getProfileService().getViewManager();
		}

		if (managementView.load()) {
			logger.info("-----changes detected, 'ManagementView' [re]loaded!-----");
		}		

		return managementView;
	}
	
	public static DeploymentManager getDeploymentManager() throws InternalServerErrorException {
		if (deploymentManager == null) {
			try {
				deploymentManager = getProfileService().getDeploymentManager();
				deploymentManager.loadProfile(DEFAULT_PROFILE_KEY);
		
			} catch (Exception e) {
				throw new InternalServerErrorException(e.getMessage());
			}
		}
		
		return deploymentManager;
	}
}
